LED Adjustable Chandelier (The Light of Blindness)
by ROBK636, published
Description
Flickr Set
flickr.com/photos/20102150@N06/sets/72157622512347669/
Video
youtube.com/watch?v=PowfdqsiZgA
Uses 35 10mm LEDs. 7 rows with 5 in series.
Idea sparked from.
* instructables.com/id/Adjustable-Lego-Lamp-Counterweighted/
* instructables.com/id/LED_CHANDELIER/
Recent Comments
view all
LEDs last a very long time, but not forever. Over the course of several years (about 6, if you leave it on 24 hours a day) your chandelier's brightness will be less than three fourths of what it started with.
I would suggest you increase the total number of LEDs in the fixture by about half, then add an adjustable dimmer to the circuit (locate it on the top of the chandelier), to reduce the brightness to a pleasant level. Every year or two, as necessary, get on a ladder, turn the knob on the dimmer, a
nd increase the brightness back to it's original level. While you're up there, dust off the LEDs :)
Make sure to use a PWM dimmer, if you don't want some LEDs to be brighter than others when the fixture is dimmed.
if you wire enough leds in series you dont need the transformer ie the leds act as resistors when polarity is alternated between bulbs and since you have ac every other bul lights up 60 times a second so you have even light http://www.instructables.com/i...
Lights need electricity, and there are several ways to electrify our picture lamps. A directly wired picture light requires that you know exactly where you want your artwork; then an electrician needs to build a juncture box behind the wall itself.
Tags
License
Give a Shout Out
Instructions
* 1/4\" Acrylic
* 4x 1/4-20 x 1-1/4 Bolts
* 8x 1/4 Washers
* 8x 1/4-20 Nuts
For adjustable height
* Small Double Pulley
* 2x Small Single Pulley
Electronic parts
* 110vAC to 12vDC Transformer
* 4A Bridge Rectifier
* 330uF Electrolytic Capacitor
* 35 10mm High Power white LEDS
I used these .5watt LEDs 100ma 290,000MCDs each
stores.ebay.com/TopBright-Led-Store_10mm-5-Chips-0-5W-Power-Led_W0QQ_fsubZ13192520QQ_sidZ190959565QQ_trksidZp4634Q2ec0Q2em322
Watch the video and look at the Flickr set for more info on the light.
Laser cut the two big sections Do not do the two small pieces and leave the protective fill on them. Solder LEDs as shown in the schematic using the plate with the holes as a guide. Link all grounds together and positives with a longer piece of wire that will reach and wrap around the bolt. Remove the protective film form the acrylic. Attach wires to the small holes leaving enough wire to reach the side bolts. Assemble the light like shown in the last picture. The other end of the wires is feed through each of the small pulleys that are attached to the ceiling. Then through a double pulley that has the counterweight.
Comments
You must be logged in to post a comment.
if you wire enough leds in series you dont need the transformer ie the leds act as resistors when polarity is alternated between bulbs and since you have ac every other bul lights up 60 times a second so you have even light http://www.instructables.com/i...
Lights need electricity, and there are several ways to electrify our picture lamps. A directly wired picture light requires that you know exactly where you want your artwork; then an electrician needs to build a juncture box behind the wall itself.
Why are some of your LEDs frosted? Have you thought about adding some yellow LEDs so the light isn't so cool?
I had frosted a few LEDs to try to even out the narrow beam "hot spot" that it had with around a 3 foot circle of bright light on top pf the table. Now every LED is frosted. It stall has a hot spot but it is more even.
LEDs last a very long time, but not forever. Over the course of several years (about 6, if you leave it on 24 hours a day) your chandelier's brightness will be less than three fourths of what it started with.
I would suggest you increase the total number of LEDs in the fixture by about half, then add an adjustable dimmer to the circuit (locate it on the top of the chandelier), to reduce the brightness to a pleasant level. Every year or two, as necessary, get on a ladder, turn the knob on the dimmer, a
nd increase the brightness back to it's original level. While you're up there, dust off the LEDs :)
Make sure to use a PWM dimmer, if you don't want some LEDs to be brighter than others when the fixture is dimmed.